https://dispendik.situbondokab.go.id/berita/ https://vta.kemenhub.go.id/assets/
Wisha, Ulung Jantama, AND Ondara, Koko. " Total Suspended Solid (TSS) Distributed by Tidal Currents during Low to High Tide Phase in the Waters of Sayung, Demak: Its Relations to Water Quality Parameters" Journal of Marine and Aquatic Sciences [Online], Volume 3 Number 2 (26 May 2017)